Q81755683

low-mass star in the constellation Cetus

Thing low_mass_star Q81755683

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Q81755683

Summary

Q81755683 is a low-mass star^[1].

Key Facts

Q81755683's instance of is recorded as low-mass star^[2].
Q81755683's constellation is recorded as Cetus^[3].
Q81755683's spectral class is recorded as M2V^[4].
Q81755683's catalog code is recorded as SDSS J003919.00-004509.0^[5].
Q81755683's catalog code is recorded as 2MASS J00391899-0045089^[6].
Q81755683's catalog code is recorded as SDSS J003919.01-004509.0^[7].
Q81755683's catalog code is recorded as SDSS J003919.01-004509.1^[8].
Q81755683's catalog code is recorded as Gaia DR2 2542876417420889984^[9].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+22.068'}^[10].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.951'}^[11].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.211'}^[12].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.502'}^[13].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.143'}^[14].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.130'}^[15].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.525'}^[16].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.274'}^[17].
Q81755683's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.7564'}^[18].
Q81755683's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.7611'}^[19].
Q81755683's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+1'}^[20].
Q81755683's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+567.8269'}^[21].
Q81755683's SIMBAD ID is recorded as 2MASS J00391899-0045089^[22].
Q81755683's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.82921870420550'}^[23].
Q81755683's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-0.75249619655630'}^[24].
Q81755683's epoch is recorded as J2000.0^[25].
Q81755683's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-13.002'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +22.068, unit: 1, amount: +19.951, unit: 1, amount: +15.211, unit: 1, amount: +14.502, unit: 1, amount: +18.143, unit: 1, amount: +17.130, unit: 1, amount: +16.525, unit: 1, amount: +14.274, unit: 1, amount: +17.7564

Catalog code SDSS J003919.00-004509.0, 2MASS J00391899-0045089, SDSS J003919.01-004509.0, SDSS J003919.01-004509.1, Gaia DR2 2542876417420889984

Constellation Cetus

Declination unit: www.wikidata.org, amount: -0.75249619655630

Declination component of proper motion unit: www.wikidata.org, amount: -13.002

Distance from earth unit: www.wikidata.org, amount: +567.8269

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +1.7611

Radial velocity unit: www.wikidata.org, amount: +1

Right ascension unit: www.wikidata.org, amount: +9.82921870420550

Right ascension component of proper motion unit: www.wikidata.org, amount: +3.112

Spectral class M2V

External References (2)

Gaia id 2542876417420889984

Simbad id 2MASS J00391899-0045089

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[2] ↑ Q81755683 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81755683 — constellation (P59): Cetus. wikidata.org.
[4] ↑ Q81755683 — spectral class (P215): M2V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81755683 — catalog code (P528): SDSS J003919.00-004509.0. SIMBAD. wikidata.org.
[6] ↑ Q81755683 — catalog code (P528): 2MASS J00391899-0045089. SIMBAD. wikidata.org.
[7] ↑ Q81755683 — catalog code (P528): SDSS J003919.01-004509.0. SIMBAD. wikidata.org.
[8] ↑ Q81755683 — catalog code (P528): SDSS J003919.01-004509.1. SIMBAD. wikidata.org.
[9] ↑ Q81755683 — catalog code (P528): Gaia DR2 2542876417420889984. SIMBAD. wikidata.org.
[10] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+22.068'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.951'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.211'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[13] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.502'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[14] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.143'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[15] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.130'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[16] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.525'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[17] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.274'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81755683 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.7564'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81755683 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.7611'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81755683 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+1'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81755683 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+567.8269'}. Gaia Data Release 2. wikidata.org.
[22] ↑ Q81755683 — SIMBAD ID (P3083): 2MASS J00391899-0045089. wikidata.org.
[23] ↑ Q81755683 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.82921870420550'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81755683 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-0.75249619655630'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81755683 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81755683 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-13.002'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81755683 is an instance of low-mass star (Q12795622) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Q81755683. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81755683

MLA “Q81755683.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81755683.

BibTeX

@misc{4ortxyz_q81755683_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81755683}}, year = {2026}, url = {https://4ort.xyz/entity/q81755683}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81755683 — https://4ort.xyz/entity/q81755683 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81755683 · Last refreshed: May 7, 2026